Four British tourists escaped unhurt when the Moroccan hotel they were staying in was damaged in a terrorist bombing attack, the Foreign Office said today.

Four British tourists escaped unhurt when the Moroccan hotel they were staying in was damaged in a terrorist bombing attack, the Foreign Office said today.

The four were believed to have been asleep in their rooms when the blasts - which killed at least 24 people - went off in Casablanca.

A Foreign Office spokesman said: "There were four Britons in the Hotel Safir that was damaged, but we have moved them to a different hotel. I think they were in the hotel asleep at the time. Whether they are leaving Morocco or not, we don't know.

"We don't know whether they were travelling separately or as part of a group."

The Foreign Office altered its advice for Britons abroad in the country on April 17 in light of the conflict in Iraq.

"We're keeping the situation under review," a spokesman said today.

The most recent advice warns: "The situation in Iraq has increased the possibility of public disturbances in Morocco, as in other countries in the region; some of these could become unruly.

"Morocco is also one of a number of countries where there is an increased threat from international terrorism."

It warns British nationals to keep a low profile, avoid crowds and be vigilant in public places frequented by foreigners.

Last night's fatal bombing in the heart of Casablanca - Morocco's economic centre - damaged a Jewish community centre and cemetery, the Belgian consulate, a Spanish restaurant and the Hotel Safir.

The Moroccan government did not directly implicate Osama bin Laden's al Qaida, but the attack confirmed fears that terrorists have plans to strike lightly-defended sites.

Three car bombs and a suicide bomber wearing an explosive belt were believed to have been the cause of the blasts, which threw the city into chaos around 10pm UK time. A fifth explosion was also heard.

At least 60 people were injured and about ten of the attackers were reported to be among the dead, which included two Belgian policemen outside the consulate.

Three suspects, all Moroccans, were held, the Moroccan news agency reported.

The blasts came just days after the terrorist strikes on Western compounds in Saudi Arabia which killed at least 34 people, including two Britons.

In Morocco, municipal elections were delayed in April over concerns of growing Muslim fundamentalism.